CN104759591A - Casting technology method for compression molding machine body - Google Patents
Casting technology method for compression molding machine body Download PDFInfo
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- CN104759591A CN104759591A CN201510217160.6A CN201510217160A CN104759591A CN 104759591 A CN104759591 A CN 104759591A CN 201510217160 A CN201510217160 A CN 201510217160A CN 104759591 A CN104759591 A CN 104759591A
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- casting
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- plasticator
- station
- horizontal running
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/046—Use of patterns which are eliminated by the liquid metal in the mould
Abstract
The invention relates to casting technology improvement techniques, in particular to a casting technology method for a compression molding machine body. The casting technology method for the compression molding machine body is characterized in that foam for a polystyrene foam sheet material with the density of 19-20 g/l is adopted to manufacture a foam model with the identical shape and structure with a casting of the compression molding machine body, the polystyrene foam sheet material with the density of 20-21 g/l is adopted to manufacture a special foam molding bed with the identical shape and structure with a lower cavity portion of the casting of the compression molding machine body, a casting gate is arranged after coating of the surface of an assembled model is dried, a specially-made pore-forming core rod is adopted to perform casting forming on baffle holes and long through holes, a stepped casting system integrating punching, exhausting, slagging and feeding is used, and finally the casting is subjected to doffing cleaning. According to the casting technology method for the compression molding machine body, the manufacturing period of the casting is short, the cost is low, and the problems that a solid type casting technology is prone to generating defects such as surface slag inclusion, wrinkled skin, shrinkage and the like are solved.
Description
Technical field
The present invention relates to foundry method improvement technology, especially a kind of casting technique of plasticator this TV station.
Background technology
Plasticator this TV station casting structure is complicated, average wall thickness 65mm, and thickness reaches 450mm, substance 18t, fitting surface out-of-shape and quality requirement is strict, the dark 170mm baffle hole 4 of Φ 100, and the dark 540mm long through-hole 5 of Φ 70, integral cast difficulty is comparatively large, see Fig. 1.Due to traditional wood pattern molding, coremaking splicing process, fabrication cycle is long, cost is high, and adopt full-mold casting technique of resin-bonded sand not mould turnover at present, the moulding of assembling placed face down, the foundry goods fitting surface chemical scab produced is serious, cannot clear up, and foundry goods easily produces shrinkage porosite, Surface inclusion, baffle hole block defects such as cannot clearing up.
Summary of the invention
It is long that the object of the invention will solve the Wooden Pattern Making cycle exactly, cost is high, and the foundry goods scab that existing full-mold casting technique of resin-bonded sand produces is serious, easily produces shrinkage porosite, Surface inclusion, baffle hole block problems such as cannot clearing up, a kind of casting technique of plasticator this TV station is provided.
Concrete scheme of the present invention is: a kind of casting technique of plasticator this TV station, comprises the following steps:
(1) bubbles model makes: on the basis of part drawing, add 0.92% shrinkage factor, add 12mm machine-finish allowance, make bubbles model graphics, 12 modules are separated into according to the design feature of plasticator this TV station, density is selected to be the polystyrene foam sheet of 19-20g/l, adopt numerical controlled carving and heating wire to cut two kinds of modes to carry out blanking and make module, be assembled into model by bonding for module, shape, the structure of described bubbles model and plasticator this TV station foundry goods are identical;
(2) special foam tyre mould making: select density to be the polystyrene foam sheet blanking molding of 20-21g/l, cavity of resorption position shape, the structure of described special foam loose tool and plasticator this TV station foundry goods are identical, as bottom support during to ensure moulding;
(3) dry coating: toast 10-12h in the drying kiln model assembled being placed on 55-60 DEG C, at model surface brushing alcohol radical graphite paint, firstly adopt tangential brushing all over coating, two times coating adopt laterally brushes, and paint thickness controls at 3-3.5mm;
(4) running channel is arranged: step gating system is set in the model of drying;
(5) moulding: be fixed on moulding platform by special foam loose tool, is placed on bubbles model on special foam loose tool, puts sand and makes at the bottom of case, mould turnover after solidifying completely, makes case lid after taking out special foam loose tool; In the baffle hole and long through-hole of plasticator this TV station front end, one_to_one corresponding places the pore-forming plug of a Gent, described special pore-forming plug is the earthenware selecting size suitable with long through-hole with baffle hole, and ceramic tube inside fill out resin sand, in interleave reinforcing rod to carry out tamping shaping, every root earthenware is brush alcohol radical graphite paint outward, treats to solidify completely to be placed in the corresponding aperture of bubbles model;
(6) pour into a mould: adopt double-contracting to pour into a mould, pouring temperature controls, at 1420 ± 8 DEG C, to pour into sub-control and be made as: C:3.4-3.6%, Si:2.3-2.5%, Mn:0.4-0.6%, P≤0.06%, S≤0.012%, Cu:0.4-0.6%, residual Mg:0.04-0.06% simultaneously;
(7) peeling: foundry goods at more than 48h at sand mold inside holding time controling, is unpacked after cooling and doffed, clear up foundry goods.
Step gating system described in the present invention is distributed in the both sides, front and back of bubbles model, front side step gating system comprises four horizontal running channels up and down, , vertical pouring gate and six ingates, two the horizontal running channels in left and right are arranged in the left and right edges at bubbles model top and through with upper horizontal running channel, lower horizontal running channel is arranged in the edge of bottom on front side of bubbles model, ingate connects foundry goods and horizontal running channel, vertical pouring gate is through with two horizontal running channels up and down in stepped construction, the top of vertical pouring gate is provided with a cup, two the horizontal running channels in left and right are evenly equipped with several rising heads, the step gating system of rear side is identical with the step gating system structure in front, not only described step gating system is beneficial to exhaust but also the bits of the bits in iron liquid and foam gasification generation are fully floated, and the iron liquid of filling heat can be continued, ensure the feeding effect of rising head and stop cast(ing) surface dreg defect.
The present invention adopts full-mold casting technique of resin-bonded sand, traditional wood pattern molding, coremaking splicing process is replaced with bubbles model and special foam loose tool, greatly save fabrication cycle and the cost of manufacture of model, avoid the earthenware displacement in gasification of full mold model, in interleave reinforcing rod and sand mold is fixed; Adopt the Design of Runner System integrating stamp, exhaust, deslagging, feeding simultaneously, solve cavityless casting technique and easily produce the defect problems such as Surface inclusion, elephant skin, shrinkage porosite; In casting process, casting material formula is optimized, to the intensity of foundry goods, wear-resistantly undermines shock resistance and all have raising in various degree.
Accompanying drawing explanation
Fig. 1 is the structural representation of plasticator this TV station of the present invention;
Fig. 2 is that bubbles model of the present invention and special foam loose tool assemble schematic diagram;
Fig. 3 is the A-A face generalized section of plasticator this TV station of the present invention;
Fig. 4 is the close-up schematic view of Fig. 3;
Fig. 5 is running gate system schematic diagram of the present invention;
In figure: 1-bubbles model, 2-special foam loose tool, 3-baffle hole, 4-long through-hole, 5-left horizontal running channel, 6-right horizontal running channel, 7-upper horizontal running channel, 8-lower horizontal running channel, 9-vertical pouring gate, 10-rising head, 11-cup, 12-reinforcing rod, 13-resin sand, 14-earthenware, 15-ingate.
Detailed description of the invention
Embodiment 1
See Fig. 1-5, the present invention includes following steps:
(1) bubbles model makes: on the basis of part drawing, add 0.92% shrinkage factor, add 12mm machine-finish allowance, make bubbles model graphics, 12 modules are separated into according to the design feature of plasticator this TV station, density is selected to be the polystyrene foam sheet of 19g/l, adopt numerical controlled carving and heating wire to cut two kinds of modes to carry out blanking and make module, be assembled into model by bonding for module, shape, the structure of described bubbles model 1 and plasticator this TV station foundry goods are identical;
(2) special foam tyre mould making: select density to be the polystyrene foam sheet blanking molding of 20g/l, cavity of resorption position shape, the structure of described special foam loose tool 2 and plasticator this TV station foundry goods are identical, as bottom support during to ensure moulding;
(3) dry coating: toast 12h in the drying kiln model assembled being placed on 55 DEG C, at model surface brushing alcohol radical graphite paint, firstly adopt tangential brushing all over coating, two times coating adopt laterally brushes, and paint thickness controls at 3mm;
(4) running channel is arranged: step gating system is set in the model of drying;
(5) moulding: be fixed on moulding platform by special foam loose tool 2, is placed on bubbles model 1 on special foam loose tool 2, puts sand and makes at the bottom of case, mould turnover after solidifying completely, makes case lid after taking out special foam loose tool 2; In the baffle hole 3 and long through-hole 4 of plasticator this TV station front end, one_to_one corresponding places the pore-forming plug of a Gent, described special pore-forming plug is the earthenware 14 selecting size suitable with long through-hole 4 with baffle hole 3, and earthenware 14 inside fill out resin sand 13, in interleave reinforcing rod 12 to carry out tamping shaping, every root earthenware 14 outer brush alcohol radical graphite paint, treats to solidify completely in the corresponding aperture being placed on bubbles model 1;
(6) pour into a mould: adopt double-contracting to pour into a mould, pouring temperature controls at 1412 DEG C, to pour into sub-control and be made as: C:3.4%, Si:2.5%, Mn:0.6%, P:0.06%, S:0.012%, Cu:0.4%, residual Mg:0.06% simultaneously;
(7) peeling: foundry goods is at sand mold inside holding time controling at more than 48h, and knockout of unpacking after cooling, clears up foundry goods.
Step gating system described in the present embodiment is distributed in the both sides, front and back of bubbles model 1, front side step gating system comprises four horizontal running channels 5 up and down, 6, 7, 8, , vertical pouring gate 9 and six ingates 15, two the horizontal running channels 5 in left and right, 6 are arranged in the left and right edges at bubbles model 1 top and through with upper horizontal running channel 7, lower horizontal running channel 8 is arranged in the edge of bottom on front side of bubbles model 1, ingate 15 connects foundry goods and horizontal running channel 8, vertical pouring gate 9 and two levels 7 up and down in stepped construction, 8 running channels are through, the top of vertical pouring gate 9 is provided with a cup 11, two the horizontal running channels 5 in left and right, 3 rising heads 10 are evenly equipped with on 6, the step gating system of rear side is identical with the step gating system structure in front, not only described step gating system is beneficial to exhaust but also the bits of the bits in iron liquid and foam gasification generation are fully floated, and the iron liquid of filling heat can be continued, ensure the feeding effect of rising head 10 and stop cast(ing) surface dreg defect.
Casting material formula in the present embodiment, carbon equivalent is 4.2, and silicon carbon ratio is 0.735, and the foundry goods tensile strength after shaping reaches 542, and percentage elongation reaches 9%.
Embodiment 2
See Fig. 1-5, the present invention includes following steps:
(1) bubbles model makes: on the basis of part drawing, add 0.92% shrinkage factor, add 12mm machine-finish allowance, make bubbles model graphics, 12 modules are separated into according to the design feature of plasticator this TV station, density is selected to be the polystyrene foam sheet of 20g/l, adopt numerical controlled carving and heating wire to cut two kinds of modes to carry out blanking and make module, be assembled into model by bonding for module, shape, the structure of described bubbles model 1 and plasticator this TV station foundry goods are identical;
(2) special foam tyre mould making: select density to be the polystyrene foam sheet blanking molding of 21g/l, cavity of resorption position shape, the structure of described special foam loose tool 2 and plasticator this TV station foundry goods are identical, as bottom support during to ensure moulding;
(3) dry coating: toast 10h in the drying kiln model assembled being placed on 60 DEG C, at model surface brushing alcohol radical graphite paint, firstly adopt tangential brushing all over coating, two times coating adopt laterally brushes, and paint thickness controls at 3.5mm;
(4) running channel is arranged: step gating system is set in the model of drying;
(5) moulding: be fixed on moulding platform by special foam loose tool 2, is placed on bubbles model 1 on special foam loose tool 2, puts sand and makes at the bottom of case, mould turnover after solidifying completely, makes case lid after taking out special foam loose tool 2; In the baffle hole 3 and long through-hole 4 of plasticator this TV station front end, one_to_one corresponding places the pore-forming plug of a Gent, described special pore-forming plug is the earthenware 14 selecting size suitable with long through-hole 4 with baffle hole 3, and earthenware 14 inside fill out resin sand 13, in interleave reinforcing rod 12 to carry out tamping shaping, every root earthenware 14 outer brush alcohol radical graphite paint, treats to solidify completely in the corresponding aperture being placed on bubbles model 1;
(6) pour into a mould: adopt double-contracting to pour into a mould, pouring temperature controls at 1428 DEG C, to pour into sub-control and be made as: C:3.6%, Si:2.3%, Mn:0.4%, P:0.042%, S:0.006%, Cu:0.4%, residual Mg:0.04% simultaneously;
(7) peeling: foundry goods is at sand mold inside holding time controling at more than 48h, and knockout of unpacking after cooling, clears up foundry goods.
Step gating system described in the present embodiment is distributed in the both sides, front and back of bubbles model 1, front side step gating system comprises four horizontal running channels 5 up and down, 6, 7, 8, , vertical pouring gate 9 and six ingates 15, two the horizontal running channels 5 in left and right, 6 are arranged in the left and right edges at bubbles model 1 top and through with upper horizontal running channel 7, lower horizontal running channel 8 is arranged in the edge of bottom on front side of bubbles model 1, ingate 15 connects foundry goods and horizontal running channel 8, vertical pouring gate 9 and two levels 7 up and down in stepped construction, 8 running channels are through, the top of vertical pouring gate 9 is provided with a cup 11, two the horizontal running channels 5 in left and right, 3 rising heads 10 are evenly equipped with on 6, the step gating system of rear side is identical with the step gating system structure in front, not only described step gating system is beneficial to exhaust but also the bits of the bits in iron liquid and foam gasification generation are fully floated, and the iron liquid of filling heat can be continued, ensure the feeding effect of rising head 10 and stop cast(ing) surface dreg defect.
Casting material formula in the present embodiment, carbon equivalent is 4.4, and silicon carbon ratio is 0.639, and the foundry goods tensile strength after shaping reaches 554, and percentage elongation reaches 10%.
Embodiment 3
See Fig. 1-5, the present invention includes following steps:
(1) bubbles model makes: on the basis of part drawing, add 0.92% shrinkage factor, add 12mm machine-finish allowance, make bubbles model graphics, 12 modules are separated into according to the design feature of plasticator this TV station, density is selected to be the polystyrene foam sheet of 19.5g/l, adopt numerical controlled carving and heating wire to cut two kinds of modes to carry out blanking and make module, be assembled into model by bonding for module, shape, the structure of described bubbles model 1 and plasticator this TV station foundry goods are identical;
(2) special foam tyre mould making: select density to be the polystyrene foam sheet blanking molding of 20.5g/l, cavity of resorption position shape, the structure of described special foam loose tool 2 and plasticator this TV station foundry goods are identical, as bottom support during to ensure moulding;
(3) dry coating: toast 11h in the drying kiln model assembled being placed on 58 DEG C, at model surface brushing alcohol radical graphite paint, firstly adopt tangential brushing all over coating, two times coating adopt laterally brushes, and paint thickness controls at 3.3mm;
(4) running channel is arranged: step gating system is set in the model of drying;
(5) moulding: be fixed on moulding platform by special foam loose tool 2, is placed on bubbles model 1 on special foam loose tool 2, puts sand and makes at the bottom of case, mould turnover after solidifying completely, makes case lid after taking out special foam loose tool 2; In the baffle hole 3 and long through-hole 4 of plasticator this TV station front end, one_to_one corresponding places the pore-forming plug of a Gent, described special pore-forming plug is the earthenware 14 selecting size suitable with long through-hole 4 with baffle hole 3, and earthenware 14 inside fill out resin sand 13, in interleave reinforcing rod 12 to carry out tamping shaping, every root earthenware 14 outer brush alcohol radical graphite paint, treats to solidify completely in the corresponding aperture being placed on bubbles model 1;
(6) pour into a mould: adopt double-contracting to pour into a mould, pouring temperature controls at 1420 DEG C, to pour into sub-control and be made as: C:3.5%, Si:2.4%, Mn:0.5%, P:0.04%, S:0.08%, Cu:0.5%, residual Mg:0.05% simultaneously;
(7) peeling: foundry goods is at sand mold inside holding time controling at more than 48h, and knockout of unpacking after cooling, clears up foundry goods.
Step gating system described in the present embodiment is distributed in the both sides, front and back of bubbles model 1, front side step gating system comprises four horizontal running channels 5 up and down, 6, 7, 8, , vertical pouring gate 9 and six ingates 15, two the horizontal running channels 5 in left and right, 6 are arranged in the left and right edges at bubbles model 1 top and through with upper horizontal running channel 7, lower horizontal running channel 8 is arranged in the edge of bottom on front side of bubbles model 1, ingate 15 connects foundry goods and horizontal running channel 8, vertical pouring gate 9 and two levels 7 up and down in stepped construction, 8 running channels are through, the top of vertical pouring gate 9 is provided with a cup 11, two the horizontal running channels 5 in left and right, 3 rising heads 10 are evenly equipped with on 6, the step gating system of rear side is identical with the step gating system structure in front, not only described step gating system is beneficial to exhaust but also the bits of the bits in iron liquid and foam gasification generation are fully floated, and the iron liquid of filling heat can be continued, ensure the feeding effect of rising head 10 and stop cast(ing) surface dreg defect.
Casting material formula in the present embodiment, carbon equivalent is 4.3, and silicon carbon ratio is 0.686, and the foundry goods tensile strength after shaping reaches 562, and percentage elongation reaches 11%.
Claims (2)
1. the casting technique of plasticator this TV station, is characterized in that: comprise the following steps:
(1) bubbles model makes: on the basis of part drawing, add 0.92% shrinkage factor, add 12mm machine-finish allowance, make bubbles model graphics, 12 modules are separated into according to the design feature of plasticator this TV station, density is selected to be the polystyrene foam sheet of 19-20g/l, adopt numerical controlled carving and heating wire to cut two kinds of modes to carry out blanking and make module, be assembled into model by bonding for module, shape, the structure of described bubbles model and plasticator this TV station foundry goods are identical;
(2) special foam tyre mould making: select density to be the polystyrene foam sheet blanking molding of 20-21g/l, cavity of resorption position shape, the structure of described special foam loose tool and plasticator this TV station foundry goods are identical, as bottom support during to ensure moulding;
(3) dry coating: toast 10-12h in the drying kiln model assembled being placed on 55-60 DEG C, at model surface brushing alcohol radical graphite paint, firstly adopt tangential brushing all over coating, two times coating adopt laterally brushes, and paint thickness controls at 3-3.5mm;
(4) running channel is arranged: step gating system is set in the model of drying;
(5) moulding: be fixed on moulding platform by special foam loose tool, is placed on bubbles model on special foam loose tool, puts sand and makes at the bottom of case, mould turnover after solidifying completely, makes case lid after taking out special foam loose tool; In the baffle hole and long through-hole of plasticator this TV station front end, one_to_one corresponding places the pore-forming plug of a Gent, described special pore-forming plug is the earthenware selecting size suitable with long through-hole with baffle hole, and ceramic tube inside fill out resin sand, in interleave reinforcing rod to carry out tamping shaping, every root earthenware is brush alcohol radical graphite paint outward, treats to solidify completely to be placed in the corresponding aperture of bubbles model;
(6) pour into a mould: adopt double-contracting to pour into a mould, pouring temperature controls, at 1420 ± 8 DEG C, to pour into sub-control and be made as: C:3.4-3.6%, Si:2.3-2.5%, Mn:0.4-0.6%, P≤0.06%, S≤0.012%, Cu:0.4-0.6%, residual Mg:0.04-0.06% simultaneously;
(7) peeling: foundry goods at more than 48h at sand mold inside holding time controling, is unpacked after cooling and doffed, clear up foundry goods.
2. the casting technique of a kind of plasticator this TV station according to claim 1, it is characterized in that: described step gating system is distributed in the both sides, front and back of bubbles model, front side step gating system comprises four horizontal running channels up and down, , vertical pouring gate and six ingates, two the horizontal running channels in left and right are arranged in the left and right edges at bubbles model top and through with upper horizontal running channel, lower horizontal running channel is arranged in the edge of bottom on front side of bubbles model, ingate connects foundry goods and horizontal running channel, vertical pouring gate is through with two horizontal running channels up and down in stepped construction, the top of vertical pouring gate is provided with a cup, two the horizontal running channels in left and right are evenly equipped with several rising heads, the step gating system of rear side is identical with the step gating system structure in front, not only described step gating system is beneficial to exhaust but also the bits of the bits in iron liquid and foam gasification generation are fully floated, and the iron liquid of filling heat can be continued, ensure the feeding effect of rising head and stop cast(ing) surface dreg defect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510217160.6A CN104759591B (en) | 2015-05-04 | 2015-05-04 | A kind of casting technique of plasticator this TV station |
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| CN201510217160.6A CN104759591B (en) | 2015-05-04 | 2015-05-04 | A kind of casting technique of plasticator this TV station |
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| CN108262446A (en) * | 2018-04-10 | 2018-07-10 | 马鞍山市麦立机械制造有限公司 | A kind of production technology of the guiding frame based on cavityless casting |
| CN109396338A (en) * | 2018-11-28 | 2019-03-01 | 四川鸿舰重型机械制造有限责任公司 | The mold and casting technique cast for liner plate under the crusher that suspends |
| CN115106501A (en) * | 2022-06-06 | 2022-09-27 | 芜湖泓鹄材料技术有限公司 | Casting process of full-mold casting machine tool body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108262446A (en) * | 2018-04-10 | 2018-07-10 | 马鞍山市麦立机械制造有限公司 | A kind of production technology of the guiding frame based on cavityless casting |
| CN109396338A (en) * | 2018-11-28 | 2019-03-01 | 四川鸿舰重型机械制造有限责任公司 | The mold and casting technique cast for liner plate under the crusher that suspends |
| CN115106501A (en) * | 2022-06-06 | 2022-09-27 | 芜湖泓鹄材料技术有限公司 | Casting process of full-mold casting machine tool body |
| CN115106501B (en) * | 2022-06-06 | 2023-05-26 | 芜湖泓鹄材料技术有限公司 | Full mold casting machine tool body casting process |
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| Publication number | Publication date |
|---|---|
| CN104759591B (en) | 2017-01-04 |
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